QUESTION 5
1 answer:
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one thing to be noteworthy is that this triangle has two angles, a 60° one and a 90° one, meaning the last angle will be a 30° one, thus we can use the 30-60-90 rule.
Check the picture below.
Answer:
The test statistic
Z = 1.149
Since the calculated value of Z = 1.149 is less than 1.96 at 5% (0.05) level of significance.
The null hypothesis is accepted
Hence the proportion is not equal 0.04
<u>Step-by-step explanation:</u>
Given data a random sample of 300 circuits is tested, revealing 16 defectives.
The proportion of success
Null hypothesis:- H₀ = P ≠0.04
Alternative hypothesis:- H₁ = P =0.04
Q = 1-P = 1-0.04=0.96
Level of significance ∝ =0.05
The test statistic
now substitute all values, we get
on calculation, Z = 1.149
Since the calculated value of Z = 1.149 is less than 1.96 at 5% (0.05) level of significance.
The null hypothesis is accepted .
Hence the proportion is not equal 0.04